Since these are a lot, make sure not to get confused in too many details. Identify the significant ones, the ones who actually recommend and buy the cables. But focus also on power generators (like the B Grimm company) and owners, as usually they are more willing to consider quality for better yield (good cable = no need to change often = no interruption = no loss of power generation = no loss of sales etc…).
And work with Outdo / Solar EPCF to tray to secure a quick win to give you confidence and start the process. Of course if you need support, Jessada/Boonruk/me can help.